<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card class="main">
      <!-- 提示信息 -->
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>

      <!-- 进度条 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- 表单 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <!-- tab栏 -->
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="beforeTableave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <!-- 级联选择器 -->
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                expand-trigger="hover"
                :options="catelist"
                :props="cateProps"
                v-model="addForm.goods_cat"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
              <!-- 复选框组 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input
            ></el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action 图片要上传的api地址
                 on-preview 点击预览图片事件
                 on-remove 点击移除图片事件
                 list-type 缩览图样式  
                 headers 设置请求 token
                 on-success 图片上传成功触发
            -->
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 文本编辑器 -->
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <!-- 添加商品ann -->
            <el-button type="primary" class="btnAdd" @click="add"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 图片预览框 -->
    <el-dialog title="图片预览" :visible.sync="perviewVisible" width="42%">
      <img :src="previewPath" alt="" class="previewImg" />
    </el-dialog>
  </div>
</template>

<script>
import _ from "lodash";

export default {
  data() {
    return {
      activeIndex: "0",
      // 添加商品的表单数据对象
      addForm: {
        goods_name: "",
        goods_price: 100,
        goods_weight: 100,
        goods_number: 1,
        // 商品的分类数组
        goods_cat: [],
        // 图片的数组
        pics: [],
        // 商品的详细描述
        goods_introduce: "",
        //
        attrs: [],
      },
      // 校验规则
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选择商品分类", trigger: "blur" },
        ],
      },
      // 商品分类列表
      catelist: [],
      // 三级 选择器数据
      cateProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },

      // 动态参数数据列表
      manyTableData: [],
      // 静态属性数据数组
      onlyTableData: [],

      // 上传图片的api地址
      uploadURL: "https://lianghj.top:8888/api/private/v1/upload",
      // 图片上传组件的响应头
      headerObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      // 图片url
      previewPath: "",
      // 图片对话框
      perviewVisible: false,
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    // 获取商品分类数据
    async getCateList() {
      const { data: res } = await this.$http.get("categories");

      if (res.meta.status !== 200) {
        return this.$message.error("获取商品分类数据失败");
      }

      this.catelist = res.data;
      // console.log(this.catelist);
    },
    // 级联选择器 选中变化会触发
    handleChange() {
      // console.log(this.addForm.goods_cat);
      // if(this.addForm.goods_cat !== 3) {
      //   this.addForm.goods_cat = []
      // }
    },
    //标签页切换
    beforeTableave(activeName, oldActiveName) {
      // console.log(activeName,oldActiveName);
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请先选择商品分类");
        return false;
      }
    },
    async tabClicked() {
      // console.log(this.activeIndex);
      if (this.activeIndex === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "many" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取动态参数失败");
        }
        console.log(res.data);

        // 字符串分割为数组
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(",");
        });

        this.manyTableData = res.data;
      } else if (this.activeIndex === "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "only" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取静态属性失败");
        }
        // console.log(res.data);
        this.onlyTableData = res.data;
      }
    },
    // 点击图片事件
    handlePreview(file) {
      this.previewPath = file.url;
      console.log(file);
      console.log(this.previewPath);
      this.perviewVisible = true;
    },
    // 点击移除图片事件
    handleRemove(file) {
      // 1.拿到要移除图片的临时路径
      const filepath = file.response.data.tmp_path;
      // 2.从pics数组中拿到 该图片的索引值
      const i = this.addForm.pics.findIndex((x) => {
        x.pic === filepath;
      });
      // 3.删除图片信息
      this.addForm.pics.splice(i, 1);
      // console.log(this.addForm);
    },
    //上传成功事件
    handleSuccess(response) {
      const picInfo = {
        pic: response.data.tmp_path,
      };
      this.addForm.pics.push(picInfo);
      // console.log(this.addForm);
    },
    // 添加商品
    add() {
      // console.log(this.addForm);
      // 预验证
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error("请填写必要的表单项目");
        }
        // 深拷贝
        // 方法一 利用三方库
        // const from = _.cloneDeep(this.addForm);
        // 方法二 js原生方法
        const form = JSON.parse(JSON.stringify(this.addForm));
        // 执行添加
        form.goods_cat = this.addForm.goods_cat.join(",");
        // 处理动态参数
        this.manyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(" " ),
          };
          this.addForm.attrs.push(newInfo);
        });
        // 处理静态属性
        this.onlyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        console.log(form);

        // 发起请求
       const {data:res} = await this.$http.post('goods',form )
       console.log(res);
       if(res.meta.status !== 201) {
        return this.$message.error('添加商品失败')
       }
       this.$message.success('添加商品成功')
      //  添加完商品之后跳转
      this.$router.push('/goods')
      });
    },
  },

  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
};
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.previewImg {
  width: 100%;
}
.btnAdd {
  margin-top: 16px;
}
</style>